Hey there –
I also used to show horses in 4-H! I can definitely tell you showing rabbits is much different. I was interested in doing this with my buns when I first got them but after doing a lot of research realized it’s really not the same at all.
Showing IS definitely almost only for breeders. Your bunny usually cannot be spayed/neutered (which is harmful to a bunnys health). Your bunny typically would need to be purebred as showing is based ONLY on their looks and postures and the way they hold themselves. I’m not sure you can even enter a bun that is not pure-bred as each showing class is based only to judge their breeds characteristics and traits.
Some cons to showing are in most shows your bun must be placed in an area with other bunnies. This makes your bunny contracting another illness or disease very easy. Bunnies can also become very stressed out when being moved to these different environments. My buns get stressed when taking a simple trip to the vet, I can’t imagine taking them to a show with all the noise and crowds and people. It would definitely overwhelm them.
When showing horses, you really develop a relationship with the horse. You move and work together. You have a connection in the show-ring that is amazing and it’s only a connection between you and your animal. With showing rabbits this is not the case.
After much research, I strongly advise you not show your bunny. If you’re interesting in doing some fun activities with your son and his bunnny – I would suggest clicker training. It’s a great way to teach your bun to do tricks and it’s a way your son will be able to establish a really trusting and fun bond with his bun!
Hope this helps!